Cultivator.



F. C. KIRKPATRICK.

CULTIVATOR.

APPLICATION FILED OCT. 3h 19!]- Patented July 23, 1918.

WITNESSES ATTORNEY FRANK C. KIRKPATRICK, OF TUPELO, MISSISSIPPI.

CULTIVATOR.

Application filed October 31, 1917.

To all whom it may concern:

Be it known that I, FRANK C. KIRKPAT- RICK, a citizen of the United States, residing at Tupelo, in the county of Lee and State of Mississippi, have invented certain new and useful Improvements in Cultivators, of which the following is a specification.

This invention relates to cultivators, and

particularly to the blades or shovels thereof,

aiming primarily to simplify and improve the construction and operation of devices of this character, as well as to increase their eiiiciency.

A further object of the invention is to pro vide an improved cultivator blade standard and blade, =so construct-ed as to permit of blades of various sizes being quickly and easily applied to the standard, and rest upon the latter so as to prevent accidental detachment of the same.

A further object of the invention is to tion, which embodies mechanism of simple construction and of easy operation, and

which will prove thoroughly practical and eflicient in use.

WVith these objects'in view, together with others which will appear as the description proceeds, the invention resides in the novel formation, combination, and arrangement of parts, all as will be described, illustrated in the drawings, and particularly pointed out in the claims.

In the'drawings Figure 1 is a vertical sectional view taken through a blade and standard of my invention, the view showing the blade properly assembled upon the standard,

Fig. 2 is a rear elevation of the device shown in Fig. 1, 1

Fig. 3 is a view similar to Fig. 1, and showing the blade detached therefrom, and

Fig. 4 is a rear elevation of the blade used in carrying out the invention;

Referring now more particularly to the to a cultivator frame in any preferred manner. This standard is curved forwardly ad- Specification of Letters Patent.

Patented July 23, 1918.

Serial No. 199,521.

nally alincd lugs 9, each of which is bent angularly and upwardly at its outer end as at 10. The distance between the under faces of the angular portions 10 of the lugs and the rear face of the blade or shovel 8 is substantially equal to the thickness of the standard adjacent the openings 7. When the blade has been applied to the forward face of the standard 5 and at the lower edge thereof, the lugs 9 will enter their respective openings, and upward sliding movement delivered to the blade or shovel will cause the hooked 0r angular portions of the lugs to engage behind the metal defining the edges of the openings. When the blade 8 is moved downwardly, the hooked or angular portions 10 of the lugs will pass from behind the edges of the openings, whereupon the blade may be readily withdrawn from the standard.

WVith the parts so positioned, the blade cannot become detached from the standard, and will be held rigidly thereto.

Pivoted adjacent its lower end between the ribs 6 is a bar 11, which constitutes a lever for holding the lugs 9 properly locked to the standard. The pivots 12-for this lever are disposed between the spaced openings 7 in the standard, and. the lever is provided with upper and lower cam faces 13 and 14 respectively. It will be observed that the upper cam face 13 extends beyond the forward edge of the lever, a greater distance than the lower cam face 14:, and it will be further observed that the said cams are of different inclinations.

lVhen the shovel 8 is first applied to the standard, and the lugs are engaged with the standard at the lower ends of the apertures,

- may be readily detached from the standard.

' ard, and accidental detachment therefrom is cidentallymoved to releasing position is rear face of the blade adjacent the openings fimoval of the same therefrom, is greatly inward swinging movement of the lever 11 nally of said apertures, lugs carried by 'will cause the upper cam 13 to engage with said blade engaged in said apertures, the the lower edge of the lug 9, and continued said lugs being adapted when the blade is inward swinging movement of the said moved in one direction to lock said blade to lever will cause the lug to be forced upsaid standard, and a lever for sliding said wardly. This upward movement of the lug blade in either direction.

continues until the lever has been moved to 2. In combination with a standard having the limit of its forward movement, where an aperture therein, a blade, an angular upon the angularly bent portions of the lugs lug carried by said blade adapted to enter 9 and 10 will be firmly engaged with the said aperture and to engage behind one edge thereof, and a lever pivoted on said stand- 7. The lever may be locked in this position 'ard and being adapted to hold said lug by a bail 15 slidably mounted upon the locked with the said edge.

standard. When it is desired to remove the blade the bail 15 is disengaged from the an aperture therein, a. blade, an angularly lever 11, and the latter iss'wungdown bent lug carried by and projecting from wardly. This downward swinging move said blade and being adapted to enter said 'ment' of the lever causes the cam face lt to aperture, the angularly bent portion of said engage the rounded outer end of the lower lug being adapted to engage'behind one of lug 9, and the latter will be forced downthe edges defining said aperture, a lever on wardly. This movement of the blade. consaid standard, and a cam face on said lever tinues until the lugs reach the bottom of the adapted to engage said lug to force the slots or apertures 7, whereupon the blade same into binding engagement with said opening edge. It is thus seen that the upward and down- 4. In combination witha standard having ward sliding movements of the blade 8 are a pair of aperturestherein, a blade, a pair of positively controlled by the lever, and it is lugs carried by said blade and beingradaptobvious, therefore, that the application of ed to enter said apertures, a lever on said the blade to the standard, as well as the restandard, and cam faces on said lever adapted to engage and move said lugs in said apfacilitated. The lever holds the blade firmly ertures. 1

locked in proper position upon the stand 5. In combination witha standard having a pair of apertures therein, a blade, apair precluded. As the greater portion of the of lugs carried by said blade,'angular exlength of the lever 11 is inclosed on both tensions at the endsof said lugs, the said sides by the longitudinally disposed ribs on extensions being adapted to enter said apthe standard, danger of the lever being ac-1 ertures and to engage behind the edges defining the same, a lever on saidlstandard, minimized. V a cam on said lever adapted when the latter From the foregoing it is obv H h I is moved in one direction to engage one of have provided a shovel or blade attachment id lug d ov th game into locking enwhich is of extremely simple and mexpengagement with said edges, and a second cam sive construction, andwhich may be quickly u f on s id l v ada ted when th latand easily applied to and'removed from the ter' is moved in reverse direction to engage standard. Blades of various sizes and the other of said lugs to withdraw the same shapes maybe used in connection with from engagement with said opening edge. standards of this character, and more or less 6. In combinationwith a standard havnumbers of openings or lugs in the standard ing a 'pair of apertures therein, a blade, a and. blades respectively may be used for pair of lugs carried by said blade, angular effecting a connection between the said eleextensions at the ends of said lugs, the said ments. extensions being adapted to entersaid aper- While the preferred embodiment of the invention, it is. ing the same, a lever pivoted on said standto be understood that the invention is not ard between said openings,- cam faces on limited thereto, as various changes in the said lever arranged minor details of construction, proportion, ivot thereof, one of the said cams being and arrangement of parts may be resorted adapted when the lever is moved in one dito if desired without departing from the rection to engage one of said lugs to move spirit of the invention as defined by the apthe same into looking engagement with the pended cla ms. v said edges, and the other of said cam faces I claim being adapted when the lever is moved in 1. In combination with a standard having the opposite direction to engage the other elongated apertures therein, a blade adaptof said lugs and to move the same from locked to slide upon said standard longitudiing engagement with the said edges.

present S a dis s f h tures and to engage behind the edges defin 7. In a device of the class described, a standard, and means for locking said lever 10 standard having longitudinally alined spaced apertures therein, a blade angularly disposed lugs carried by and projecting rearwardly from the said blade and being adapted to enter said apertures and to engage behind the edges defining the same, a lever pivoted to said standard and being capable of reciprocating said blade on said against movement.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK O. KIRKPATRICK.

copies of} thin patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Washington, D. 0. 

